131331740 has 12 divisors (see below), whose sum is σ = 275796696. Its totient is φ = 52532688.

The previous prime is 131331737. The next prime is 131331751. The reversal of 131331740 is 47133131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3283274 + ... + 3283313.

It is an arithmetic number, because the mean of its divisors is an integer number (22983058).

Almost surely, 2^131331740 is an apocalyptic number.

131331740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131331740 is an abundant number, since it is smaller than the sum of its proper divisors (144464956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131331740 is a wasteful number, since it uses less digits than its factorization.

131331740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6566596 (or 6566594 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 131331740 is about 11460.0061082008. The cubic root of 131331740 is about 508.3036552293.

Adding to 131331740 its reverse (47133131), we get a palindrome (178464871).

The spelling of 131331740 in words is "one hundred thirty-one million, three hundred thirty-one thousand, seven hundred forty".